Soldering-iron.



PATENTBD APR. 23, 190,7'. H.'l BERG. f v vSOLDBRING IRON.

APPLIcATIoN FILED 14.1.2.2. 190e.

WITNESSES:

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HENRY BERG, OF ORANGE, NEW JERSEY.

SOLDERINGEIRQN.

Specification of Letters Patent.

Patented April 23, A190'?.

Application filed March 2,1906. Serial No. 303.752.

To @ZZ whom it nung concern:

Be it knqwn that I, HENRY BERG, a citizen of theUnited States, residing in the city of' Orange, county of Essex, and State of New Jersey, have invented a new and useful Improvement in Soldering-Irons, of which the following is a full, clear, and exact description, such as will enable others skilled inthe art to which it appertains to make and use the same.

The object of my invention is to construct a soldering-iron of the gasolene type, in which a constant fuel-feed is provided with which to heat `the bit and also to provide supplemental means for regulating the combustion and consequent consumption of fuel. In soldering-irons of this type much difficulty is experienced in maintaining a constant ow of fuel to the burner and a uniform and very intense heat within the bit or head of the iron I have efl'ectually overcome these and other difficulties as well as simplified the construction bythe means hereinafter described, and illustrated in the accompanying drawings, in which- Figure 1 is a longitudinal sectional view of my improved construction. Fig. 2 is an end view of the front cap with the forward parts removed. Fig. 3 is a sectional view through the reservoir looking toward the front cap. Fig. 4 is a view of one form of air-regulator. Fig. 5 is a plan view of the usual solderingbit. Fig. 6 is a view of another form of airregulator. Figs. 7 and 8 illustrate other forms of soldering-bits which may be used in place of that shown in Fig. 5.

In the drawings, 1 is the tubular reservoir for containingthe liquid fuel. Secured to the forward end of the reservoir 1, as shown, is the front cap 2, provided with the forwardly-projecting tubular member 2. The cap 2 is provided with an outwardly-projecting flange, so as to form the reservoir 23for the reception of alcohol, gasolene, or other inflammable material to be used for a purpose hereinafter to be described. Screwed into the forward end of the tubular member 2 is the mixing-chamber 3, having closed rear end 4, as shown. Through this closed end 4 is the fine feeding passage or duct 4. The space within the tubular member 2/ and the closed portion 4 of the mixing-chamber is filled with asbestos, as shown. Adjacent to the rear end of the mixing-chamber 3 I provide the lateral openings 5 for the admission of air, so as to form with the fuel coming from the feed-port 4 a highly-'combustible mixture. The exterior of the mixing-chamber is provided with the flange 7, upon which is screwed the soldering-bit 8. The forward end 3 of the mixing-chamber extends into the interior of the bit, as shown in Fig. 1.

Surrounding the tubular member 2 and the mixing-chamber 3 is the air-regulating 'thimble 6. (Shown in plan, Fig. 4.) This regulator isl made of perforated sheet metal having lateral openings 6, which register with the openings 5 of the mixing-chamber. At the forward end of this regulator I provide the notch 64, which in lconnection with the stud 32, projecting laterally from the mixingchamber, forms a suitable stop for limiting the rotary movement of the regulator 6.

The bit, as illustrated in Figs. 1 and 5, is hollow and provided with numerous perforations 8 to form outlets for the products of combustion. The hollow bit thus formed provides a combustion-chamber, and I find in operation that Iam `able to heat the bit to the requisite degree in much less time than is possible with any similar structure with which I am acquainted.

At the rear of the cap 2 I provide the projection 9, having the lateral elbow plortion 9. Passing longitudinally through t e projection 9 I provide the duct 10, and ylaterally through the same, as shown, I provide the duct 11. The outer yends of these ducts 10 and 1 1 are `closed by the small screw-'closures 11. In the axial lcenter of the reservoir 1 I provide the feeding-tube 12, which is sug; ported by means of the elbow 9, througwhich it passes. The opening 11 ycommunicates directly to the interior of such tube 12.

This tube is a trifle shorter than the reservoir 1, as shown, so as to permit the play of the valves 14 at either end thereof, the ends being provided with the valve-seats 15 to form a liquid-tight valve.` The stems 13 of the valves 14 project within the tube 12 vand form suitable guides or retaining devices for the valves 14'. Between the adjacent ends of the valve-stems 13 and within the tube 12 I place the sliding weight 16.y

Therear end of the tubular reservoir 1 is closed by the cap 17 which has the funnelshaped mouth 18 and the screw-plug 20, screwed into the end of the cap 17, as shown. The screw-plug 20 is provided with a handle 19 for convenience in turning the screw-plug 20. suitable means for replenishing the supply of IOO In this manner I am able to provide fuel When the saine shall have become exhausted.

In the use of the device I find it necessary to regulate the supply of fuel, and to do this I provide the needle-valve 25 for regulating the size of the passage 10. This valve 25 is carried by the stem 21, which in turn has the handle 22, the stem 21 being screw-threaded at 26 into the metal 22 of the cap, as shown, I also provide the gland 23, surrounding the valve-stem 21, for the purpose of preventing leakage. It will be noted that the valvestem 21 lprojects angularly into the cap 2. This is for the purpose of making use of the handle 22 of the valve-stem as a foot upon which the whole device may be supported with the heated bit elevated, as illustrated in Fi 1.

In Fig. 6 I have shown a modified form of air-regulator, in which the openings 63 are triangular in form. I find that under some conditions this form of opening gives better results, for the reason that the influx of air through a slight opening will direct a current close to the duct 4. I may also dispense with the perforations 62 and make the regulator of plain sheet metal. (Not shown.) I find, however, that the perforations will permit a sufficient supply of air to mix with a minimum supply of fuel to keep the bit 8 at a suHicient temperature for ordinary Work, While the openings 5 are covered by the otherwise solid portion of the regulator. When a larger supply of fuel is admitted to the burner, then a larger supply of air is required, under which conditions the openings 6 or 63 may be made to register with the openings 5 of the combustion-chamber 3. Thus I am enabled to properly regulate both fuel and air supply.

In the use of my soldering-iron the reservoir is lled by unscrewing the plug 19 20, using the funnel-shaped opening 1S for such purpose. When the reservoir. 1 is filled with fuel, the plug 19 2O is restored, and the device is held in a vertical position, and gasolene, alcohol, or other inflammable material l is poured in the cup or reservoir 23 and lighted. The heat generated by the burning of this fuel will gasify a portion of the gasolene and create a pressure within the reservoir 1, which pressure will force the fuel through the tube 13, passages 11 and 10 to saturate the asbestos Within the chamber 2, and finally through the duct 4, where it will ordinarily be lighted by the flame from the burning fuel in the cup 23. Otherwise it may be lighted by a burning match.

, When the gas has begun to form within the reservoir, due to the heating of the cup 2 and adjacent parts, the generation'of gas is continuous so long as there is any flame from the duct or nozzle 4, for the reason that gasolene being normally volatile the heat transmitted by the metallic parts from the duct vjacent to the head 2.

or nozzle 4f will be sufficient to maintain a constant pressure within the reservoir 1, which pressure being upon the surface of the `liquid will force the same through the tube to the seat 15, while the sliding weight 16 will fall against the end of stem 13 of the other valve, and thus unseat the valve adthat no matter which end of the reservoir is uppermost .a passage-way for liquid fuel is always formed below the Surface of such fuel, while the opening above the surface is always closed. Again, when the head 8 is uppermost the heated parts are nearest the surface of the liquid, thus giving a much more rapid generation of gas, and therefore an increased pressure upon the surface of the liquid fuel. Iith the handle 19 uppermost, the gravity-feed will be found sufficient.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modications will occur to a person skilled in the art.

I claim- 1. In a gasolene soldering-iron, the combination of a tubular reservoir, a cap at eachA end of said reservoir, a gasifying-chamber and a mixing-chamber, a valved passage leading from the reservoir to the gasifyingchamber, an absorbent non-combustible material filling said latter chamber and a gaspassage from the latter chamber to the mixing-chamber, air-passages leading into said mixing-chamber and means to regulate the supply of fuel to said gasifying-chamber and a thimble having triangular apertures therein, said thimble being rotatably mounted upon said mixing-chamber for regulating the air-supply to said mixing-chamber.

2.. In a soldering-iron, the combination of a fuel-reservoir, a gasifying-chamber and a mixing-chamber, a valved passage leading from the reservoir to the gasifying-chamber, means for regulating the supply of fuel to the gasifying-chamber, an absorbent non-combustible material filling said latter chamber, a jet or nozzle leading from said gasifyingchamber to the mixing-chamber, apertures in the mixing-chamber adjacent to said jet or nozzle, and a thimble rotatably mounted upon said mixing-chamber, said thimble having triangular apertures therein for regulating the air-supply to said chamber.

3. In a gasolene soldering-iron, the combination of a tubular fuel-reservoir, a gasifying-chamber and a mixing-chamber, a fuelsupply tube secured within said fuel-reservoir and located substantially in the center It will thus be seen IIO thereof, a passage Connecting the interior of said tube with said gasifying-ehaniber, cheek-valves seated in the ends of said tube, a sliding 'Weight Within said tube adapted to unseat the valves respectively, and a noncombustible absorbent inaterial filling said gasiying-eharnber.

4. In a gasolene soldering-iron, the Combination. of a fuel-reservoir, a fuel-passage leading from said reservoir, a needle-valve in said passage the stem of said valve being inelined to the axis of said `passage, a handle upon the valve-stem, said handle having a broad llat surface adapted to serve as a foot for supporting the soldering-iron With one of its ends elevated.

i 5. A gasolene soldering-iron-having a fueli reservoir, a gasifying-ehainber and a eoInbustion-ehamber, fuel-passages Connecting said Chambers, a lnass of absorbent nonooinbustible material iilling the gasifyingchamber, a needle-valve intercept-ing one of said passages, said valve having a handle with a broad i'lat surface forming a foot for supporting the soldering-iron With the oombustion-eharnber elevated.

this 24th day of February, 1906.

. HENRY BERG. Witnesses:

Louis M. SANDERS, VALENTINE FRICKEL.

This specification signed and 'witnessedl 

